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                航班安排                </h1>
                <p>时间限制：1s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：256MB</p>			</div>
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                                <h3>题目描述</h3><p><p><span style="font-size: medium">神犇航空有K架飞机，为了简化问题，我们认为每架飞机都是相同的。神犇航空的世界中有N个机场，以0..N-1编号，其中0号为基地机场，每天0时刻起飞机才可以从该机场起飞，并不晚于T时刻回到该机场。一天，神犇航空接到了M个包机请求，每个请求为在s时刻从a机场起飞，在恰好t时刻到达b机场，可以净获利c。设计一种方案，使得总收益最大。<br />
</span></p></p><hr/><h3>输入格式</h3><p><div class="pdcont"><span style="font-size: medium">　　第一行，4个正整数N,M,K,T，如题目描述中所述；<br />
　　以下N行，每行N个整数，描述一个N*N的矩阵t，t&shy;<sub>i,j</sub>表示从机场i空载飞至机场j，需要时间t<sub>i,j</sub>；<br />
　　以下N行, 每行N个整数，描述一个N*N的矩阵f，f&shy;<sub>i,j</sub>表示从机场i空载飞至机场j，需要费用f<sub>i,j</sub>；<br />
　　以下M行，每行5个整数描述一个请求，依次为a,b,s,t,c。<br />
</span></div></p><hr/><h3>输出格式</h3><p><div class="pdcont"><span style="font-size: medium">　　仅一行，一个整数，表示最大收益。<br />
</span></div></p><hr/><h3>样例输入</h3><pre>2 1 1 10
0 5
5 0
0 5
5 0
0 1 0 5 10

</pre><hr/><h3>样例输出</h3><pre>5

</pre><hr/><h3>提示</h3><p><p>数据规模及约定<br />
　　对于10%的测试数据，K=1；<br />
　　另有20%的测试数据，K=2；<br />
　　对于全部的测试数据，N,M&lt;=200，K&lt;=10，T&lt;=3000，ti,j&lt;=200，fi,j&lt;=2000，0&lt;=a,b&lt;N，0&lt;=s&lt;=t&lt;=T，0&lt;=c&lt;=10000，ti,i=fi,i=0，ti,j&lt;=ti,k+tk,j，fi,j&lt;=fi,k+fk,j。<br />
</p></p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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